How do you pick a good site for a Sigma Rain Gauge?

Document ID

Document ID TE8966

Version

Version 1.0

Status

Status Published

Published Date

Published Date 11/07/2017
Question
How do you pick a good site for a Sigma Rain Gauge?
Summary
Site considerations for successful installation of a Sigma Rain Gauge
Answer
To get accurate results consider the following issues:
  1. Beware of objects that might block the rain from falling into the rain gauge
    • Trees or shrubs
    • Buildings
    • Fences
    • Due to wind, these objects need to be a good distance away from the rain gauge.  The taller the object, the farther away.
  2. The rain gauge must sit on a level surface
    • The rain gauge base can be adjusted to make sure it is flat.
    • However, the adjustment can only adjust for small deviations.  Pick a surface that is nearly flat.
  3. Make sure the rain gauge is safe from high winds.
    • Make sure to attach the Rain Gauge to a solid, heavy base.  A cement block approximately 12” X 12” X 1” works well.
    • Not in a location exposed to very high winds.
  4. Make sure the rain gauge is in a location free from access by unauthorized persons.  Vandalism is a real problem.
  5. The following can plug the rain gauge funnel, making it read “no rain:”
    • Pollen and leaves from trees and bushes
    • Grass clipping from mowers.
    • Birds droppings from birds sitting on the rain gauge.
    • Dust and dirt.
    • These are often hard to predict (birds, for example).  Watch the data and move the rain gauge if there is an issue.
While a rain gauge can be set in grass or on dirt, it is better to set it on concrete or pavement to reduce the risk of some of the above issues

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